UPDATE: Perry would accept Felder’s challenge, and may end up facing him in Vegas.

“I can’t believe this mother(expletive) man,” Perry said on Instagram. “I mean, being hurt is part of being an MMA fighter. I don’t think I’ve ever gone into a fight 100 percent. I’m always hurt. I’m hurt right now. I’m still going to show up and collect that check, break some neck.”

Medeiros told ESPN.com that he suffered a displaced fracture during training.

“I apologize to all my supporters and Mike,” Medeiros said.

“Every fight I’ve taken, I’ve always had an injury I could work around or through. I’ll always go out on my shield. Unfortunately I can’t even take my shield to war. I hate thinking I’ve let anyone down. I was looking forward to giving the world and my opponent the best of me. On the real, my bad, Mike. Hate to let you and all your fans down. This is the last thing I wanted.”